OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application" l9 b$ |3 q% N! I2 L- A4 D
/*
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* edma_test.c
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*/ G1 a L) [% A( E( M7 `
* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.; d+ l% A+ R" e- z' ]' O
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE' T7 r3 n: v6 I$ y
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT1 I# d! n5 t1 y2 p4 h6 X0 g
* TO CHANGE./ j" ~" q) w1 I: E- N8 F
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.& ]2 z1 P. E1 [* ~% A9 z) k2 \; S
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty9 ]( B5 x4 g3 _5 f; o
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the9 ]+ z5 U3 t! h
* GNU General Public License for more details./ h# Y% R% Z" T. A& H* i* l
*/
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#include <linux/module.h>
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#include <linux/init.h>9 O# A7 D: w4 [3 v* ]" A g; r# z' H* \- O
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>6 I" h- I" [, ^" c6 f) C* I
#include <linux/moduleparam.h>" j9 b3 u) A& `3 W; f
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>) P( w9 @) k+ X3 ^8 M* i
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#include <mach/memory.h>
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#include <mach/hardware.h> i8 T( |. s6 d8 A4 O' P( B2 B
#include <mach/irqs.h>& W0 d; ]. i% o! ?6 U
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/. p' f) D: k. G" k; v: i6 B
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#ifdef EDMA3_DEBUG2 V* b; M) `6 S9 B4 w
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS); S; P8 c9 v6 \% @) o
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)" n. T, O9 w, B7 r$ j1 }
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__); j0 t9 X' f. m; Y1 j. f; N5 u# Z; q
#else
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#define DMA_PRINTK( x... )+ \- N0 r) k5 Q: t5 x: n' V) v
#define DMA_FN_IN% X2 l7 J o$ T. u; _- |& ?0 p- w
#define DMA_FN_OUT# e1 I4 {2 r( Z6 ^+ h
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)& F4 V/ m6 V4 ?, b i: u6 n; N7 y
#define STATIC_SHIFT 3) l3 O/ e) n( b' T' x# V
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21( r8 g/ |8 {! N" O/ M1 C( Q
#define TCCHEN_SHIFT 22, Q/ a2 E# {. y9 R, F
#define ITCCHEN_SHIFT 23# j% w7 p" E8 q: W1 M
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static volatile int irqraised1 = 0;" \5 v& L" k$ ~5 f2 Y& p# ~
static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 `( ^4 H5 K5 K) X" d% z1 p7 \' _
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0; D5 ^2 t1 h" E. q7 {6 R- B
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);% a; W7 v) x5 ]" w5 x2 B
module_param(bcnt, int, S_IRUGO);
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module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动